East Sussex · England
Window & door mastic in Magham Down, East Sussex
Window mastic for Magham Down, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints at the ends of sills
- Gaps between the frame and the inside reveal
- A bead that does not match the frame
Surface by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. The paint or stain needs to be sound where the sealant meets it.
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We will tell you if that’s what we find.
Window mastic in Magham Down
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. Typical jobs include mastic that has split away from the wall and gaps where the sill meets the wall, on window sills, timber windows & doors and patio & French doors.
Outdoor sealant needs dry, clean surfaces, so work on frames around Magham Down is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee, large or small.
- Location
- Magham Down (BN27)
- Wider area
- East Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Magham Down
More services for Magham Down
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It usually takes anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Magham Down, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
- Let us know about earlier repairs to the joints
How to get a quote
For window mastic in Magham Down, call 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Your questions about window mastic in Magham Down
Do you work for landlords with property near Polegate station?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is Magham Down within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you remove the old sealant?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Can you do upstairs windows?
Yes, if safe access is possible. For high or awkward windows, we will tell you what access is needed.
What does window mastic cost?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Windows and doors in Magham Down
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Horselunges Manor (about 1.7 miles west) nearby, there’s older building stock in the area around Magham Down as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you let a flat or house near Polegate station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Horselunges Manor, about 1.7 miles west, is one of the historic houses in the wider area around Magham Down, and older homes nearby need a sealant that suits their walls.
Magham Down is about 2 miles north-east of Hailsham, in East Sussex. Every kind of property in Magham Down is covered for window mastic. Every job comes with our one-year guarantee. Magham Down is one of 289 places in East Sussex where we work for window mastic. For nearby work, see our Brighton page, about 18 miles away.
Our applicators cover all of BN27 for window mastic and the streets around it. Whether your property is on Old Road and Nodes Lane or a nearby road, our applicators can take on the job. If you’re just outside Magham Down, we cover Hellingly (1 mile west), Upper Horsebridge (1 mile west), Hailsham (2 miles south-west), Lower Horsebridge (2 miles west) and Tile Hurst (2 miles west). Further out, we also cover Eastbourne (7 miles south), Hastings (12 miles east), Bexhill-on-Sea (8 miles east), Seaford (11 miles south-west), Lewes (12 miles west) and Crowborough (13 miles north-west).
Near you in Magham Down
The nearest railway station is Polegate station, roughly 4.5 miles south-west. Nearby you will also find Amberstone Hospital (0.5 miles west) and Herstmonceux Castle (2.4 miles east).
Common problems we fix in Magham Down
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. That’s what backing rod is for.
People generally contact us after spotting one of these:
- Old mastic that has gone black or come away
- Sealant in the wrong colour for the frame
- Draughty joints inside around the window
- Gaps left after new windows were fitted
Schools such as Hailsham Community College are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Before booking anyone
- What preparation is included
- Which sealant they’ll use, and why
- Whether they seal over old material or remove it
- Whether VAT is included
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Quotes for window mastic in Magham Down
The price is agreed before any work begins. It’s based on:
- Whether the work is at height
- The old material and how stubborn it is
- The number of rooms or windows
- Working hours on commercial sites
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Where the job is, and your postcode
- The rough size of the job
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Use gentle cleaners on frames and sealant
- Keep jet washers away from the mastic
- Air rooms to keep condensation down around windows
- Keep drainage slots and sill grooves clear
Most silicone sealants won’t take paint, so if you’re planning to paint the frames or walls, tell us beforehand. There are paintable sealants for joints that need it.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.